Show HN: I486SX_soft_FPU – Software FPU Emulator for NetBSD 10 on 486SX

First Release is Here!

I'm excited to announce the first release of i486SX_soft_FPU — a software FPU emulator for the classic Intel 486SX CPU, running on NetBSD 10!

This project brings floating-point support back to life for 486SX machines, even though modern NetBSD versions no longer natively support processors without a hardware FPU. If you're into retrocomputing, operating system hacking, or just love old-school hardware, check it out!

Project page: https://github.com/mezantrop/i486SX_soft_FPU Contributions, feedback, and testing are all very welcome!

Let's keep these vintage machines alive!

#retrocomputing #NetBSD #486SX #opensource


Comments URL: https://news.ycombinator.com/item?id=43815116

Points: 35

# Comments: 10

https://github.com/mezantrop/i486SX_soft_FPU

Created 10h | Apr 27, 2025, 11:30:14 PM


Login to add comment

Other posts in this group

Why do electrons not fall into the nucleus?

Article URL:

Apr 28, 2025, 8:50:03 AM | Hacker news
Ask HN: CS degrees, do they matter again?

tldr; skip to the --------

Last time I "Asked HN", I was in a very different place. Fresh out of a bootcamp, right at the peak, and subsequent collapse of the Covid hiring. It didn't go well. Ho

Apr 28, 2025, 6:30:11 AM | Hacker news